An Overview of Wireless Charging: What Is It And How Does It Work?

Wireless charging is an optimized inductive charging that allows you to charge your devices wirelessly. It uses electromagnetic induction to provide electricity to portable devices. Qi is the universal interface standard for wireless charging. It was developed to transfer inductive electrical power over a distance of up to 4 cm. The Qi wireless charging standard is the most common application for electronic devices such as smartphones, tablets, and smartwatches. Wireless charging is also used in electric toothbrushes, vehicles, power tools, and medical devices. The device can be placed on top of the wireless pad or near a charging station and can be charged. This is a more efficient way of charging than charging through a wire. 

The technology is widely used in low-power applications, such as wearables, ear pods, tablets smartwatches, smartphones, and other handheld devices, which require charging levels below 100 watts. Consumer electronics manufacturers are focusing on strategic alliances with wireless charging manufacturers to enhance their product features. For instance, the United States-based consumer electronics company acquired a New Zealand-based company to provide wireless charging in its several products such as smartphones, smartwatches, etc. Moreover, some U.S. companies have launched or are launching smartphones that are enabled with Qi wireless charging technology.

Moreover, in the U.S., Link Transit (public transit authority) has been operating wireless charging for its fleet of battery-electric buses since 2018 and has signed a five-year extension with its technology provider. Wireless power transmission is the wireless technology through which power is transmitted from one power source to another. It can be used for both short- and long-range applications. Wireless power transmission is widely used in consumer electronics, as well as in fuel-free rockets, robots, fuel-free aircraft, and fuel-free electric cars. In addition to inductive technology, resonance charging, and radiofrequency technology, laser beam or microwave or conductive technologies are also used for energy transfer.